login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084309 a(n)=GCD[p(n)-1,n]. 9
1, 2, 1, 2, 5, 6, 1, 2, 1, 2, 1, 12, 1, 14, 1, 4, 1, 6, 1, 10, 3, 2, 1, 8, 1, 2, 3, 2, 1, 2, 1, 2, 1, 2, 1, 6, 1, 2, 1, 4, 1, 6, 1, 4, 1, 2, 1, 6, 1, 2, 1, 2, 1, 2, 1, 2, 1, 2, 1, 20, 1, 2, 9, 2, 13, 2, 1, 4, 1, 2, 1, 2, 1, 2, 3, 2, 1, 6, 1, 8, 1, 2, 1, 12, 1, 2, 1, 8, 1, 6, 1, 2, 3, 2, 1, 2, 1, 2, 9, 20, 1, 2 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

MATHEMATICA

Table[GCD[Prime[w]-1, w], {w, 1, 128}]

CROSSREFS

Cf. A084310-A084316.

Sequence in context: A111934 A098509 A019910 * A047991 A120898 A153910

Adjacent sequences:  A084306 A084307 A084308 * A084310 A084311 A084312

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jun 13 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 14 14:07 EST 2012. Contains 205623 sequences.